function [ out ] = setUser( userNum )
global mR;
rU=0.95*mR*sqrt(rand(1,userNum));
setaU=2*pi*rand(1,userNum); 
xU=rU.*cos(setaU); 
userinfo(1:userNum,1)=xU;
xU=xU';
yU=rU.*sin(setaU);
userinfo(1:userNum,2)=yU;
yU=yU';
userinfo(1:userNum,3)=-13+(-15+10).*rand(userNum,1);
out=userinfo;

end

